Paul M. Engelhart

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Local contacts through dielectric layers are an important prerequisite for the production of very high efficiency SiO<sub>2</sub>-or SiN<sub>x</sub>-passivated silicon solar cells. We use laser ablation as a contactless process for local removal of dielectric layers. This contactless process is suitable for processing very thin wafers without cell breakage.(More)
Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of(More)
Through understanding predictors of needle sharing, it may be possible to design AIDS prevention interventions more effectively. Data were collected from a sample of 416 patients in two New York City methadone programs in 1990. Questions were asked about needle sharing and about a battery of predictors covering 11 psychosocial domains. Based on factor(More)
Individuals acquire knowledge while working in software development projects but too often this knowledge is not documented or captured so that it can be shared or later reused. Dissemination of experience related to new development paradigms, such as development based on commercial off-the-shelf (COTS) components, can be particularly useful. To support(More)
We employ laser technology as a key processing tool for fabricating our novel RISE (rear interdigitated single evaporation) silicon solar cells. The contactless production sequence incorporates a self-aligning single evaporation step for metallising the interdigitated rear contacts. In this paper, we compare in detail the performance of two types of RISE(More)
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